CN209729894U - Multistage corona wind heat radiator - Google Patents

Abstract

A kind of multistage corona wind heat radiator, comprising: heat sink, the fin including rib base and extension heat dissipation area, rib base is contacted with heat source and is fixed on heat source；Pin electrode group, as emitter, in heat sink intercostal space, with heat sink physical contact；Orifice electrode is insulated on heat sink as collector, collectively constitutes electrode pair with pin electrode group, but with pin electrode group physical contact；High voltage power supply continues output HIGH voltage, and high-voltage end is connect to provide high voltage to pin electrode with pin electrode, and ground terminal is connect with orifice electrode.Multistage corona wind heat radiator provided by the utility model can greatly improve the convection transfer rate of air, and then improve heat sink exchange capability of heat, so that area needed for heat sink, volume and weight are reduced；And wider thermal power range can be applicable to according to the series of heat sink length adjustment corona discharge；And the device movement-less part, it is compact-sized, easy for installation, there is high reliability, be convenient for mass production.

Description

Multistage corona wind heat radiator

Technical field

The utility model relates to technical field of heat dissipation, and in particular to a kind of corona wind heat radiator.

Background technique

In radiation processes, since the convection transfer rate of air is very low, compared to the thermal conduction resistance of metal heat sink, from heat sink To the convective heat transfer resistance of air side, to be usually quite be bottleneck portion in entire radiation processes greatly.In the row such as power electronics In industry, electronic component especially semiconductor components and devices requires work within rated temperature, once overtemperature, component service life It can decline to a great extent, will be burnt when serious.The heat that component issues is taken away in time therefore, it is necessary to heat sink.It is empty by improving The convection transfer rate of gas strengthens heat sink exchange capability of heat, the trouble free service of electronic component can be effectively ensured, while can To reduce heat sink heat dissipation area, so that heat sink volume and weight is reduced, it is beneficial to energy conservation environmental protection and space utilization.

In the means for improving the cross-ventilation coefficient of heat transfer, most common method is to install fan additional.Fan drives by motor Flabellum high-speed motion is to improve wind speed, but moving component can bring very high unreliability and biggish noise and vibration, this Work to electronic component is all unfavorable.In addition, when heat sink air duct is longer, wind speed meeting in flowing of fan offer Gradually decay, local convective heat transfer coefficient is lower and lower along air-flow direction.Fan plural serial stage will lead to bigger Noise and security risk, and be helpless to increase air quantity.

Therefore, it is necessary to a kind of radiator, movement-less part, noiseless and without vibration can be realized while improving wind speed It is dynamic；It can according to need plural serial stage or parallel connection simultaneously, to meet the longer use condition in heat sink air duct.

Utility model content

(1) technical problems to be solved

In view of this, the utility model proposes a kind of multistage corona wind heat radiators, at least part of solution State shortcoming in the prior art.

(2) technical solution

The utility model provides a kind of multistage corona wind heat radiator, comprising:

One is heat sink, and the fin including rib base and extension heat dissipation area, rib base is contacted with heat source and is fixed on heat source；

One pin electrode group, as emitter, in heat sink intercostal space, with heat sink physical contact；

One orifice electrode is insulated on heat sink as collector, collectively constitutes electrode pair with pin electrode group, but with Pin electrode group physical contact；And

One high voltage power supply continues output HIGH voltage, and high-voltage end is connect to provide high voltage to pin electrode with pin electrode, Ground terminal is connect with orifice electrode.

Wherein, it is described it is heat sink on be provided with multiple translots, direction is vertical with fin, and translot quantity is equal to the orifice electrode Quantity；The fin in translot region is cut off from root, only retains rib base portion point；

Wherein, the pin electrode group includes the multiple pin electrodes arranged on frame and frame；Needle in the pin electrode group Electrode roots are thick, top is sharp, and needle point is the hemispherical of diameter 0.05mm~0.5mm；Wherein, the material of the pin electrode group is Know material stainless steel, wolfram steel or tungsten；Wherein, the pin electrode in the pin electrode group has multiple rows of, and corresponding orifice electrode has multiple；

Wherein, the orifice electrode has the through-hole of multiple arrays, collectively constitutes multi-level electrode pair with the pin electrode group； The shape of through holes is round, rectangular or diamond shape；Wherein, the material of the orifice electrode is known materials stainless steel, copper alloy Or aluminium alloy；The thickness of the orifice electrode is less than translot width, does not contact with fin；

Wherein, the high voltage of the high voltage power supply output is straight polarity, direct current negative polarity or exchange, and voltage is kilovolt Grade 0V~30kV.

(3) beneficial effect

It can be seen from the above technical proposal that multistage corona wind heat radiator provided by the utility model is with beneficial below Effect:

(1) multistage corona wind heat radiator provided by the utility model, passes through the electricity of pin electrode group and orifice electrode composition Corona discharge between extremely pair generates corona wind, and corona wind flows in fin gap, can greatly improve the heat convection of air Coefficient；Therefore under same hot-fluid and the temperature difference, required heat dissipation area is smaller, and heat sink volume and weight is also smaller.

(2) multistage corona wind heat radiator provided by the utility model, directly converts electrical energy into sky by ionization process The kinetic energy of gas, without any moving component, high reliablity is low in energy consumption, noiseless and vibration.

(3) multistage corona wind heat radiator tool provided by the utility model, when required heat sink fin is longer, electrode pair Air can be accelerated step by step with plural serial stage or parallel connection, to overcome flow resistance, improve the local convection heat exchange system of fin everywhere Number.

(4) multistage corona wind heat radiator provided by the utility model, it is compact-sized, it is required small in size, while there is peace The easy advantage of dress, disassembly, maintenance, volume production easy to accomplish.

Detailed description of the invention

It is described by below with reference to attached drawing to made by the utility model, the other objects and advantages of the utility model will It is clear that can simultaneously help to be fully understood by the utility model.

Figure 1A is the emitter of the prior art and the perspective view of collector positional relationship；

Figure 1B is the emitter of the prior art and the right view of collector positional relationship；

Fig. 2 is the perspective view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 3 is the front view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 4 is the top view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 5 is the right view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 6 is the heat sink perspective view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 7 is the pin electrode group perspective view of multistage corona wind heat radiator provided by the embodiment of the utility model；

Fig. 8 is the orifice electrode perspective view of multistage corona wind heat radiator provided by the embodiment of the utility model.

[description of symbols]

1: heat sink

1-1: translot

2: pin electrode group

2-1: pin electrode

2-2: high tension terminal

3: orifice electrode

3-1: insulator foot

3-2: ground connection binding post

4: high voltage power supply

4-1: high-voltage output line

4-2: ground line

5: heat source

Specific embodiment

To keep the purpose of this utility model, technical solution and advantage clearer, implement below in conjunction with the utility model The attached drawing of example, is clearly and completely described the technical solution of the utility model.Obviously, described embodiment is this reality With novel one embodiment, instead of all the embodiments.Based on described the embodiments of the present invention, this field is general Logical technical staff every other embodiment obtained under the premise of being not necessarily to creative work, belongs to the utility model protection Range.

Unless otherwise defined, the technical term or scientific term that the utility model uses are should be belonging to the utility model The ordinary meaning that personage in field with general technical ability is understood.

With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under The feature in embodiment and embodiment stated can be combined with each other.

The technical principle of existing corona discharge is utilized in multistage corona wind heat radiator provided by the utility model, such as schemes Shown in 1A and Figure 1B, Figure 1A is the perspective view of emitter and collector, and Figure 1B is the right view of emitter and collector: being generated Corona discharge needs at least one emitter and a collector.Emitter requires radius of curvature very little, generally metal fine Or prong；Collector is generally metal plate, round tube or silk screen etc..Both emitter and collector do not contact, there are one compared with Small distance.When applying sufficiently high voltage on emitter, and it is very strong by will form after grounded collector, around emitter Inhomogeneous field, it is sufficient to by neighbouring air ionization.Charged particle, to current collection polar motion, drives neutral on the way under the action of electric field Air molecule directed movement forms corona wind.Corona wind has certain speed, can be used for strengthening heat convection.

Based on above-mentioned technical principle, multistage corona wind heat radiator provided by the utility model include heat sink, pin electrode group, Orifice electrode and high voltage power supply, wherein the heat sink fin including rib base and extension heat dissipation area, rib base are contacted and fixed with heat source On heat source, heat source can be the electronic component to generate heat when the work such as cpu chip, LED light source, be that the utility model provides Multistage corona wind heat radiator heat dissipation object；Pin electrode group uses metal material, and as emitter, it includes frames and frame The sharp pin electrode in the multiple tops arranged on frame, pin electrode are located in heat sink intercostal space, pin electrode group and heat sink any portion Divide and does not contact holding insulation；Orifice electrode uses metal material, as collector, thereon with the through-hole of multiple arrays, leads to It crosses insulator foot to be mounted on heat sink, and forms electrode pair with pin electrode, electrode keeps certain distance not contact the two；High pressure Power supply can continue output HIGH voltage, and high-voltage end is connect to provide high voltage, ground terminal and hole to pin electrode with pin electrode Plate electrode connection.

After high voltage power supply starting, the tip of pin electrode has very high voltage (1~20kV), and multiple pin electrodes are in parallel, Therefore voltage swing is identical.Air around pin electrode is ionized, and generates the corona wind for blowing to orifice electrode.Corona wind passes through hole Hole on plate electrode is flowed in heat sink intercostal space, enhances the heat convection of air.

Further, the pin electrode in pin electrode group can have multiple rows of, corresponding orifice electrode can also have it is multiple, with group At multi-level electrode pair, make corona wind after multistage accelerates, wind speed increases, flow resistance when runner can be overcome longer, with to the greatest extent The convection transfer rate of air may be improved.

Further, the pin electrode in pin electrode group has the characteristics that root is thick, top is sharp, needle point substantially hemispherical, Diameter is preferably 0.05mm~0.5mm.

Further, multiple translots are provided on heat sink, direction is vertical with fin, translot quantity and orifice electrode quantity one It causes；The fin in translot region is cut off from root, only retains rib base portion point.

Further, the thickness of orifice electrode be less than translot width, do not contacted with fin, i.e., guarantee orifice electrode with it is heat sink It is completely insulated.

Further, the shape of through holes on orifice electrode can be round, rectangular, diamond shape etc., and effect is to make corona wind logical It crosses, the size in hole is unsuitable too small, and by taking circular hole as an example, preferably diameter is between 2mm~20mm.

Further, pin electrode group integrally uses known materials stainless steel, wolfram steel, tungsten etc. to be made, and orifice electrode is using Know that material stainless steel, copper alloy, aluminium alloy etc. are made.

Further, the high voltage that high voltage power supply exports can be straight polarity, direct current negative polarity or exchange, voltage and be KV level, preferably 0V~30kV are adjustable.

The three-level corona wind heat radiator that the embodiments of the present invention provide, can be used for radiating to heat source 5, such as Shown in Fig. 2 to Fig. 8, which includes: heat sink 1；Pin electrode group 2；Orifice electrode 3 and high voltage power supply 4.

Wherein, as shown in Figures 2 and 6, heat sink 1 has multiple fins to extend heat dissipation area, in the side perpendicular to fin 3 translot 1-1 are provided with upwards, to accommodate 3 identical orifice electrodes 3.As shown in Fig. 2, Fig. 5 and Fig. 7, orifice electrode passes through exhausted Edge pedestal 3-1 is fixed on heat sink, and translot width is greater than the width of orifice electrode so that in addition to insulator foot, orifice electrode with Heat sink no any contact.There are 3 row's pin electrodes in pin electrode group 2, the frame of pin electrode group is located above heat sink fin, guarantees Any part contact that the tip of pin electrode 2-1 is in intercostal space and discord is heat sink, and certain distance is kept not with orifice electrode Contact.As shown in Fig. 2, Fig. 3 and Fig. 5, high voltage power supply 4 passes through high-voltage output line 4-1 and pin electrode in heat sink side, high-voltage end The high tension terminal 2-2 of group is connected, it is therefore an objective to provide high voltage to pin electrode group；The ground terminal of high voltage power supply passes through ground line 4- 2 are connected with the ground connection binding post 3-2 of 3 orifice electrodes；In this way, when corona discharge starts, high voltage power supply, pin electrode group, hole The air being ionized between plate electrode and electrode just constitutes a circuit.Heat source 5 passes through the boundaries such as heat-conducting silicone grease or heat conductive silica gel Plane materiel material transfers heat to heat sink with the bottom for being scheduled on heat sink 1.

The heat sink fin on rib base and rib base, as shown in fig. 6, the quantity of heat sink size and fin can be according to heat source Calorific value adjustment.In the present embodiment, fin quantity is 8.Pin electrode group is mounted on above heat sink fin, is appointed with heat sink Meaning part does not contact directly, and fixed installation between the two uses insulation mode, such as plastics screw.According to pin electrode Number of rows is provided with same amount of translot on heat sink fin, and translot quantity is 3 in the present embodiment, translot direction and fin direction Vertically.Translot has one fixed width, is 5mm in the present embodiment；The fin in translot region is cut off from root, only retains rib base portion Point.The spacing of two adjacent translots is equal with two rows of spacing of pin electrode.The starting point that first translot is arranged in heat sink fin is attached Closely, in the present embodiment, as shown in figure 5, first translot and heat sink left end distance 10mm from left to right.Heat sink material is preferably led Hot good copper or aluminium alloy, the heat that heat source issues can be exported as early as possible, extend to all fins from rib base.

In one embodiment of the utility model, pin electrode group by " day " font frame, 21 pin electrodes and 1 height Crimping terminal is formed a whole by the techniques such as machining or welding, as shown in fig. 7, generally conductive metal material, excellent It is selected as metal not oxidizable under the room temperature such as known materials stainless steel, wolfram steel, tungsten.To guarantee to use safe, the frame of pin electrode group Frame part can be coated with isolation material.Pin electrode is the taper that root is thick, top is sharp, and tip is approximately hemispherical, preferably diameter Between 0.05mm~0.5mm；Tip diameter is bigger, and the local electric field strength after energization is smaller, electricity required for corona discharge It presses bigger.In the present embodiment, pin electrode is 3 rows, and orifice electrode is 3, therefore the present embodiment is three-level corona wind heat radiator. In other examples, pin electrode can be any number of rows, within preferably 10 rows, the quantity of every row's pin electrode and heat sink Fin number of gaps is consistent, that is, guarantees there is a pin electrode in each fin gap.

Orifice electrode is similarly metal material, as shown in figure 8, preferably known materials stainless steel, copper alloy, aluminium alloy Deng.It is one piece of metal plate, processes multiple through-holes of array above.The shape in hole is unlimited, can be rectangular, round, diamond shape Deng, effect is that corona wind is allowed to pass through, in the present embodiment be 3mm square square hole.Metal part width between hole is usual It is greater than pin electrode diameter, to guarantee being normally carried out for corona discharge.In other examples, orifice electrode can also be used more Layer or single-layer metal screen electrode substitution.Orifice electrode is fixed in heat sink translot by insulator foot, the length of orifice electrode Degree and height can be identical as heat sink translot, and thickness is less than translot width.Orifice electrode is not contacted with fin, is passed through with rib base exhausted The isolation of edge pedestal, guarantees orifice electrode and heat sink completely insulated.In heat sink each intercostal space, pin electrode and orifice electrode are protected It holds a certain distance not contact, which is preferably between 5mm~30mm.Apart from smaller, corona discharge is more easy to happen, but easily Air breakdown occurs；Distance is bigger, and corona discharge needs higher voltage, but corona discharge process is safer.

There are high-voltage end and ground terminal in high voltage power supply 4, as shown in figure 4, stretching out high-voltage output line and pin electrode from high-voltage end The high tension terminal of group is connected, and the ground line stretched out from ground terminal is connected with the ground connection binding post of three orifice electrodes.It is this to connect Line mode makes 21 pin electrodes for parallel connection, i.e. voltage value on every pin electrode is all identical；In addition, 3 orifice electrodes are also It is in parallel；It ensure that the consistency of corona discharge everywhere.The material of high-voltage output line and ground line is preferably copper, and uses insulation material Matter cladding.The output voltage of high voltage power supply can be straight polarity, direct current negative polarity or exchange, and voltage range is in 0V~30kV Between it is adjustable.After the distance between pin electrode and orifice electrode are fixed, the voltage of high voltage power supply is adjusted, voltage value is enable Cause corona discharge, and is unlikely to be too close to breakdown voltage.Normal corona discharge, the electric current between an electrode pair are microampere Grade；When air is breakdown, the electric current between electrode pair can be greatly improved, and with noise and electric arc --- and the two phenomenons are available Carry out auxiliary judgment breakdown voltage.

After high voltage power supply 4 is powered, voltage having the same on all pin electrodes, after voltage is more than threshold voltage, Corona discharge starts, and corona wind generates immediately.As shown in figure 5, the pin electrode and orifice electrode of one row of the leftmost side are first order electricity Extremely right, corona wind obtains initial velocity here, blows to intermediate second level electrode pair in intercostal space along fin direction.Second Corona discharge equally occurs between grade electrode pair, secondary acceleration is carried out to corona wind, so that the wind speed of corona wind improves.Equally, The third level electrode of the rightmost side is to again accelerating corona wind.In this way, the corona wind for passing through third level orifice electrode just has There is higher wind speed, subsequent flow resistance can be overcome, it is entire heat sink to pass through.Since wind speed is higher, the convection current of air The coefficient of heat transfer is higher, therefore the present apparatus can be accelerated by the multistage to air, obtain higher flowing velocity, and fin compared with Flow resistance is overcome when long, finally improves heat sink heat convection ability.

For the embodiments of the present invention, it is also necessary to explanation, in the absence of conflict, the reality of the utility model Applying the feature in example and embodiment can be combined with each other to obtain new embodiment.

Finally it should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although The utility model is described in detail referring to preferred embodiment, those skilled in the art should understand that, it can be right The technical solution of the utility model is modified or equivalent replacement, without departing from the spirit and model of technical solutions of the utility model It encloses.

Claims (10)

1. a kind of multistage corona wind heat radiator, which is characterized in that the multistage corona wind heat radiator includes:

One is heat sink, and the fin including rib base and extension heat dissipation area, rib base contacts with heat source and be fixed on heat source, it is heat sink on Multiple translots are provided with, direction is vertical with fin, and the fin in translot region is cut off from root, only retains rib base portion point；

One pin electrode group, as emitter, in heat sink intercostal space, with heat sink physical contact；

One orifice electrode is insulated on heat sink as collector, collectively constitutes electrode pair with pin electrode group, but with needle electricity Pole group physical contact；And

One high voltage power supply, continues output HIGH voltage, and high-voltage end is connect to provide high voltage, ground connection to pin electrode with pin electrode End is connect with orifice electrode.

2. multistage corona wind heat radiator according to claim 1, which is characterized in that the translot quantity is equal to the hole The quantity of plate electrode.

3. multistage corona wind heat radiator according to claim 1, which is characterized in that the pin electrode group include frame and The multiple pin electrodes arranged on frame.

4. multistage corona wind heat radiator according to claim 3, which is characterized in that the pin electrode in the pin electrode group Root is thick, top is sharp, and needle point is the hemispherical of diameter 0.05mm~0.5mm.

5. multistage corona wind heat radiator according to claim 1, which is characterized in that the material of the pin electrode group is not Become rusty steel, wolfram steel or tungsten.

6. multistage corona wind heat radiator according to claim 1, which is characterized in that the pin electrode in the pin electrode group Have multiple rows of, corresponding orifice electrode has multiple；The orifice electrode has the through-hole of multiple arrays, common with the pin electrode group Form multi-level electrode pair.

7. multistage corona wind heat radiator according to claim 6, which is characterized in that the shape of through holes is round, side Shape or diamond shape.

8. multistage corona wind heat radiator according to claim 1, which is characterized in that the material of the orifice electrode is not Become rusty steel, copper alloy or aluminium alloy.

9. multistage corona wind heat radiator according to claim 1, which is characterized in that the thickness of the orifice electrode is less than Translot width is not contacted with fin.

10. multistage corona wind heat radiator according to claim 1, which is characterized in that the height of the high voltage power supply output Voltage is straight polarity, direct current negative polarity or exchange, and voltage is KV level 0V~30kV.